AstroAI S8
#1 in Cars and SUVsFull review
A tiny, cheap starter for four- and six-cylinder cars. Fine as a glovebox backup, but not for trucks or V8s.
Amazon $42.19$42.19
The AstroAI S8 is the better jump starter overall, rated 4.0 to 3.7. The AstroAI S8 leads on value and features. The AstroAI S8 costs $17.80 less ($42.19 vs $59.99).
AstroAI S8 Air
#2 in Cars and SUVsFull review
A combined jump starter and tire inflator for small and mid-size cars. Good for drivers who want one compact roadside kit, not for trucks.
Amazon $59.99$59.99
Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the AstroAI S8 for value ($42.19 for its size vs $59.99 for its size) and features (manual override, rated to -4 °F, USB-C charging vs rated to -4 °F).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every cars and suvs jump starter; a clear win is highlighted. How we rank explains each one.
| Factor weight | AstroAI S8 | AstroAI S8 Air |
|---|---|---|
| Overall rating | 4.0/5 | 3.7/5 |
| Value 40% | 98 $42.19 for its size | 82 $59.99 for its size |
| Features 35% | 67 manual override, rated to -4 °F, USB-C charging | 50 rated to -4 °F |
| Capacity 15% | 24 29.6 Wh battery | 50 capacity not published in Wh (neutral score used) |
| Warranty 10% | 50 2-year warranty | 50 warranty not published (neutral score used) |
Specifications
| AstroAI S8 | AstroAI S8 Air | |
|---|---|---|
| Starting | ||
| Rated engines | 6 L gas, 3 L diesel | 6 L gas, 3 L diesel |
| Peak amps (maker) | 1,500 A | 3,000 A |
| Voltage | 12 V | 12 V |
| Manual override | Yes | - |
| Lowest operating temperature | -4 °F | -4 °F |
| Battery and charging | ||
| Chemistry | Lithium-ion | Lithium-ion |
| Capacity | 29.6 Wh | - |
| Capacity (mAh) | - | 10,000 mAh |
| USB-C input | 10 W | - |
| USB outputs | USB-A 5 V/2.1 A | - |
| Build | ||
| Flashlight | Yes | Yes |
| Air compressor | No | Yes |
| Dimensions | 7.9 x 4.5 x 3.7 in | - |
| Weight | 0.9 lb | 2.4 lb |
| Warranty | 2 years | - |